Cheap flights from Idaho to Seattle from $69
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Seattle departing on 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
Idaho FallsSeattle
IDA Idaho Falls Fanning Field - SEA Seattle/Tacoma Intl
IDASEA
Idaho Falls Fanning Field
Thu 10/29
6:56 pm-10:05 pm
1 stop4h 09m
Seattle/Tacoma Intl
Wed 12/2
5:30 am-12:17 pm
1 stop5h 47m
Idaho FallsSeattle
IDA Idaho Falls Fanning Field - SEA Seattle/Tacoma Intl
IDASEA
Idaho Falls Fanning Field
Fri 2/26
6:45 pm-12:11 am
1 stop6h 26m
Seattle/Tacoma Intl
Mon 3/1
5:45 am-12:27 pm
1 stop5h 42m
LewistonSeattle
LWS Lewiston Nez Perce Rgnl - SEA Seattle/Tacoma Intl
LWSSEA
Lewiston Nez Perce Rgnl
Wed 2/3
6:25 am-7:55 am
Nonstop1h 30m
Seattle/Tacoma Intl
Thu 2/11
9:30 pm-10:49 pm
Nonstop1h 19m
LewistonSeattle
LWS Lewiston Nez Perce Rgnl - SEA Seattle/Tacoma Intl
LWSSEA
Lewiston Nez Perce Rgnl
Thu 10/29
9:15 am-10:45 am
Nonstop1h 30m
Seattle/Tacoma Intl
Mon 11/2
9:45 pm-11:06 pm
Nonstop1h 21m
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Sat 1/9
9:20 am-7:02 pm
1 stop10h 42m
Seattle/Tacoma Intl
Sat 1/9
9:23 pm-11:46 pm
Nonstop1h 23m
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Mon 11/2
5:35 pm-12:55 am
1 stop8h 20m
Seattle/Tacoma Intl
Wed 11/4
7:00 am-2:15 pm
1 stop6h 15m
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Wed 11/4
1:53 pm-2:31 pm
Nonstop1h 38m
Seattle/Tacoma Intl
Sun 11/8
9:24 pm-11:49 pm
Nonstop1h 25m
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Thu 12/17
11:55 am-4:32 pm
1 stop5h 37m
Seattle/Tacoma Intl
Sun 1/10
5:00 am-11:16 am
1 stop5h 16m
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Fri 11/6
8:59 pm-9:37 pm
Nonstop1h 38m
Seattle/Tacoma Intl
Sat 11/7
9:56 am-12:25 pm
Nonstop1h 29m
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Mon 11/2
5:35 pm-12:55 am
1 stop8h 20m
Seattle/Tacoma Intl
Wed 11/4
11:35 am-9:40 pm
2 stops9h 05m
See travel insights to Seattle from
How to get the cheapest flight ticket from Idaho to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
In general, April is the cheapest month to fly from Idaho to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $166. If you don’t want to visit Seattle in April, then you should wait until January to fly from Idaho, when ticket prices are also cheap, with an average price of $177.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Idaho is on a Friday. momondo users have found tickets for Friday departures for as low as $413. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Idaho because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $585.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Idaho in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $470 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the evening, with an average ticket price of $547. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Idaho to Seattle/Tacoma Intl flight route?
Fly from Lewiston Nez Perce Rgnl to Seattle/Tacoma Intl for the best Idaho - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight from Idaho to Seattle?
You are more likely to see cheaper flights to Seattle from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $226 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Idaho for as low as $156 on momondo.
What cabin class options are available on Idaho to Seattle flights?
There are 4 cabin classes available to choose from on Idaho to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from Idaho to Seattle on average per day?
47 flights are operational daily from Idaho to Seattle as of October 2026. The most popular departure time for this route is 10:00AM, with 46% of flights per day taking off at noon.
How many flights depart from Idaho to Seattle on average per week?
The number of flights available between Idaho and Seattle is 333 per week as of October 2026. The most frequent departure day is Thu, with 16% of weekly flights leaving on this day.
Cheap Idaho to Seattle flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Idaho to Seattle
Frequently asked questions about flying from Idaho to Seattle
When did momondo last update prices for flights from Idaho to Seattle/Tacoma Intl Airport?
Prices for flights from Idaho to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Idaho to Seattle/Tacoma Intl Airport?
As of October 2026, there are 2 operators available to choose from for flights from Idaho to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Idaho to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Idaho to Seattle?
momondo data reveals that the most frequently booked plane model on the route from Idaho to Seattle is Boeing 737-800 Passenger/BBJ2 (winglets), representing 53.40% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 10.00%, Embraer 175 at 9.40%, and Boeing 737-700 at 5.80%.
Best airlines flying from Idaho to Seattle
Compare and see reviews for airlines that fly from Idaho to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $96 | Free Cancellation | Rating 7.8 8,646 reviews | |||
| PriceFrom $99 | Free Cancellation | Rating 7.9 13,038 reviews |
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Idaho to Seattle?
Finding the right flight to Seattle from Idaho is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.
Can I find flights from Idaho to Seattle with flexible booking policies on momondo?
All flight searches from Idaho to Seattle on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Idaho to Seattle?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho to Seattle.
I’m not ready to book a flight from Idaho to Seattle right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Idaho to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.